Dental cuspidor.



M. N. GALLENDER.

DENTAL OUSPIDOR. APPLICATION FILED MAY 28, 1906.

Patented May 4, 1909.

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I ATENT OFFICE.

MONROE N. OALLENDER, OF SAN FRANCISCO, CALIFORNIA.

DENTAL CUSPIDOR.

No. 920,265. Specification of Application filed May 28,

T 0 all whom it may concern:

Be it known that I, MONROE N. CALLEN- DER, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Dental Cuspidors, of which the following is a specification.

This invention relates to improvements in dental cuspidors. These devices, as heretofore used, may be characterized as of two classes; in one the waste conduit has a clear bore, so that the Waste is free, but the range of movement of the bowl is limited; inthe other class, the ran e of movement is greater, but the waste is s ow and liable to become obstructed.

The object of the resent invention is to provide a cuspidor w 'ch shall have a large range of movement, and at the same time have free waste, and such that it cannot easily become obstructed. Again, dental cuspidors of prior forms have been rotected by strainers in full view, so that b ood clots and nauseating debris are exposed to the sight of the patient. In the present invention the strainer is entirely concealed.

In the accompanying drawing, Figure 1 is a vertical section, partly in side elevation, of my improved dental cuspidor, Fig. 2 is a plan view thereof.

Referring to the drawing, 1 indicates a support for the entire apparatus, which support may be attached to a dental chair, or otherwise. In said su port is swiveled, as shown at 2, an arm 3 having formed at its outer end a sleeve 4. Within said sleeve is contained a tubular sup orting joint 5, formed with an annular s oulder 6 resting on said sleeve. The bottom of the joint is connected with the waste hose 7, said joint and hose thus forming the waste conduit. The joint is extended to form a lip 8 upon which rests the discharge or waste mouth 9 of the bowl 10 of the cuspidor, and said joint has also an arm 11, which carries at its end a sleeve 12 in which is secured the pipe 13 connected with the top of the supply hose 14, forming the supply conduit. From said pipe 13 extends a short horizontal pipe 24 to which is connected by a union 15 a pipe 16 connected with two pipes 17 forming a ring and extending around and underneath the bowl 10 of the cuspidor, and thus forming an additional support for said bowl. One of the pipes 17is used to supply water to, the

Letters Patent.

1906. Serial No. 319,230.

Patented May 4, 1909.

bowl, being connected with suitable dis charge openings 18 in the bowl, distributing the water evenly over the bottom thereof. A valve 19 controls the flow of the water through the pipe 24.

The bottom of the bowl is so shaped that a fluid introduced at any point within said bowl will be directed to and through the discharge or waste mouth 9 at the periphery. Said mouth extends close to the edge of the flaring top of the strainer 20, which is removably contained in the tube 5. Said mouth may extend slightly over the edge of said strainer, but not so much as to interfere with the removal thereof. Thus, when the bowl is pro erly placed in osition, the waste water flows into said strainer. At the same time the strainer can be readily removed, when desired, without removing the bowl. Said strainer is normally concealed by the perforated tray 21 upon which rests the water glass, which tray can swing to one side on a pivot 22 immediately beneath the saliva ejector 23.

I claim:

1. A dental cuspidor, comprising a suit able support, an arm mounted thereon to swing substantially horizontally, a waste conduit carried at the outer end of said arm, a bowl having a peripheral waste passage arranged to discharge into said conduit, a support for the bowl independent of the said discharge passage, connected with said end of said arm, and a supply pipe arranged to supply water to said bowl and connected to said support, substantially as described.

2. A rental cuspidor, comprising a suitable support, an arm connected thereto to swing substantially horizontally, a waste conduit carried at the outer end of said arm, a bowl having a discharge passage arranged to discharge into said conduit, a support for the bowl independent of said discharge passage, extending from said end and pivotally connected therewith, a supply conduit also carried by said support, and a pipe leading from said support to a suitable inlet in the bowl, substantially as described.

3. A dental cuspidor, comprising a suitable support, an arm connected therewith to swing substantially horizontally, a joint carried. at the outer end of said arm having an arm extending therefrom and a lip, a waste conduit connected to said joint, a bowl support connected to said latter arm, 1 a bowl on said support having a discharge passage discharging over said lip, and means for supplying the bowl with water, substantially as described.

4. A dental cuspidor comprising a suitable sup ort, an arm connected therewith to swing su stantially horizontally, a joint carried at the end of said arm, a discharge conduit connected to said joint, said joint having an arm extending therefrom and a lip, a su ply pipe carried by said latter arm, a tubu ar bowl support mounted on the end of said arm and connected with said supply conduit, and a bowl connected with said support and having a discharge passage eX tending over said lip, substantially as described.

5. A dental cuspidor, comprising a suitable sup ort, an arm connected therewith to swing su stantially horizontally, a joint carried at the outer end of said arm having an arm extending therefrom and a lip, a strainer in said. joint, a pivoted glass tray normally concealing said strainer, a Waste conduit connected to the said joint, a bowl support connected to said latter arm, a bowl on said support having a discharge passage discharging over said lip, and means for supplying the bowl with water, substantially as described. Signed at San Francisco, this 21st day of May, 1906.

LEONE E N. CALLENDER. Witnesses FRANCIS M. WRIGHT, J. E. GRANT. 

